<script>
    //对象拷贝
    let person1 = { "name": "lucy", "age": 20 }
    let person2 = { ...person1 }
    console.log(person2)

    //对象合并
    let name = { name: 'mary' }
    let age = { age: 20 }
    let p2 = { ...name, ...age }
    console.log(p2);
</script>